Applied common Spotless Eclipse framework to CDT

[fvgh]

Applied common Spotless Eclipse framework to CDT (see #234).
Updated version and artifact ID as discussed in #226.

[nedtwigg]

I tried to publish but got this error:

Script '/Users/ntwigg/Documents/dev/spotless/_ext/gradle/p2-fat-jar-setup.gradle' line: 75

* What went wrong:
A problem occurred configuring root project 'eclipse-cdt'.
> Could not find method setP2AntProxy() for arguments [### ARGS ###
  --launcher.suppressErrors
  -nosplash
  -application org.eclipse.ant.core.antRunner
  
  ### BUILD.XML ###
  <?xml version="1.0" encoding="UTF-8"?><project>
    <p2.mirror>
      <source>
        <repository location="http://download.eclipse.org/tools/cdt/releases/9.4"/>
        <repository kind="artifact" location="file:///Users/ntwigg/.goomph/shared-bundles"/>
      </source>
      <destination location="file:///Users/ntwigg/Documents/dev/spotless/_ext/eclipse-cdt/build/p2asmaven/p2/p2" append="false"/>
    </p2.mirror>
  </project>
  ] on object of type com.diffplug.gradle.p2.AsMavenGroup.

Similar error in WTP. I didn't try very hard to debug yet. Any low-hanging fruit to check before I debug more? Maybe an uncommitted file?

[fvgh]

Ah, sorry, didn't encapsulated my proxy settings correctly. Will do tomorrow...